An Arizona archaeological site partially destroyed by border wall contractors in April may have been thousands of years older than Stonehenge or the Egyptian pyramids, researchers say.
A Lee Enterprises, Incorporated newspaper. Majority shareholder: David Hoffmann, Hoffmann Media Group.
Air Force: Tucson PFAS cleanup 'entirely independent' of golf proposal- Tony Davis
For Star subscribers: The U.S. Air Force is separating its efforts to address PFAS contamination of Tucson groundwater at Davis-Monthan Air Force Base from a nonprofit group's bid to get a golf course built on the base in return for financing the cleanup.
- Tony Davis
For Star subscribers: A non-profit group seeking city approval of a development at Davis-Monthan that includes a gold course might been to 'secure' millions of dollars for PFAS cleanup, a Tucson official says.
- Tony Davis
For the first time, Tucson will be dipping into what amounts to its water "savings account" — the CAP water it has stored underground — in 2027 due to impending shortages in new CAP deliveries from the Colorado River.
- Debra Utacia Krol Arizona Republic
Former U.S. Sen. Jon Kyl, who died Wednesday, was one of Arizona's most influential water policy experts, a water law attorney who was also a principal figure in several tribal water settlements.
- Henry Brean
Three protesters dressed as endangered animals were arrested Monday after entering a restricted border wall construction site in Southern Arizona, authorities say.
- Tony Davis
Tucson's long-term water supply "is in significant danger" if PFAS contamination of the city's central wellfield isn't addressed, City Manager Tim Thomure says.
The U.S. Air Force has offered to start work cleaning up groundwater contaminated by "forever chemicals" at Davis-Monthan Air Force Base if Tucson officials agree to allow a group of Air Force retirees to lease city land for a golf course.
The public has until Oct. 6 to make its views known on a U.S. Forest Service proposal to repeal a federal rule that allowed the setting aside of national forest lands as roadless.
More than 350,000 acres of national forest in Southern Arizona would be open to road building for the first time in 25 years under a Trump Administration proposal to repeal an earlier rule that led to the ban on new roads in 44 million acres nationwide.
The cuts in Colorado River water use just approved by the U.S. government will not be as big as they seem — because in some cases Arizona, Nevada and California will still be allowed to use more water than they did in four of the last five years.
New Colorado River cuts sound substantial. But because they’re measured against legal allocations rather than recent use, the actual water savings could be considerably smaller.
South32 received final federal approval to expand its Hermosa critical minerals mine near Patagonia onto Forest Service land, despite concerns about water and environmental impacts.
A new $27 million layer of technology at the city's 32-year-old southside water treatment plant will bring more efficient and effective cleanup of PFAS compounds known as "forever chemicals" from that area's long-polluted aquifer, Tucson Water officials said.
The U.S. government needs to launch a massive federal public works program to build more infrastructure to help Arizona and other Southwestern states cope with impending Colorado River water cutbacks, said U.S. Sen. Ruben Gallego and Tucson Mayor Regina Romero.
For Star subscribers: Video has shown one or possibly two female jaguars roaming the wilderness in Sonora, just five miles south of the U.S. border, researchers say.
The San Carlos Apache Tribe and two conservation groups are suing federal regulators over a proposed copper mine in a desert riparian area favored by endangered birds near Mammoth.
The federal government finalized a plan to reduce Colorado River water use in the Southwest by 1.25 million acre-feet over two years to protect reservoir levels amid ongoing drought conditions and provide a basis for future water management.
An advocate for the Center for Biological Diversity hiked roughly 15 miles to photograph several swaths of public land in Arizona that have been cleared so far for the massive construction project.
Hundreds of residents of Three Points shared their dissatisfaction with a company they say has done too little to keep the community informed about its proposal for a 5,000-acres solar farm.
Two Arizona projects aim to boost water supplies by storing surface water underground and using treated wastewater from California, with $7 million allocated for detailed feasibility and environmental studies.
For Star subscribers: The continued run of record low water flowing from the Colorado River into the nation's two biggest reservoirs has major ramifications for water supplies in Tucson and across the entire Southwest.
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Homeowners in Cochise County’s Willcox Basin are facing widespread well failures due to sediment buildup and ground subsidence caused by excessive groundwater pumping, leading many to rely on costly water hauling services for drinking water.
State wildlife officials scored a surprise hit earlier this year with their real barn owls of Whitewater Draw, so they’re already back with the sequel.
Lake Powell, the giant reservoir on the Utah-Arizona border that helps power millions of homes, has fallen to its lowest level ever amidst a worsening western drought exacerbated by climate change.
The U.S. Interior Department's draft plan may cut Colorado River deliveries to Arizona, California, and Nevada by up to 3 million acre-feet annually, a move Arizona claims disregards existing water agreements.
Data centers are expanding rapidly across metro Phoenix, raising questions about how much electricity and water Arizona can afford to devote to them.
A federal judge refused a bid by the Tohono O'odham Nation to immediately block construction of 62 miles of new border wall along the reservation's southern boundary with Mexico.
The Center for Biological Diversity released footage confirming Cinco’s presence near two 30-foot border walls being built, signaling increased barriers to jaguar movement and habitat connectivity in southern Arizona.
Arizona’s population of mountain lions is headed for a crash, and state-regulated hunting is to blame, according to a new lawsuit from conservationists.